Summer is one of the most popular times of year to take a vacation. If you have ever traveled overseas, or just across many time zones, you have probably experienced jet-lag. For the uninitiated, jet-lag is that zombie-like sensation which could be considered akin to the feeling of starting the day with no sleep. To help prevent you from turning into a zombie at your travel destination, Reader’s Digest has compiled a list of 15 ways to fight jet-lag which are excerpts from the book “Sleep to be Sexy, Smart, and Slim” by Ellen Michaud. Check out some our favorites from the list, inside…